CVE-2009-3639

NameCVE-2009-3639
DescriptionThe mod_tls module in ProFTPD before 1.3.2b, and 1.3.3 before 1.3.3rc2, when the dNSNameRequired TLS option is enabled, does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 client certificate, which allows remote attackers to bypass intended client-hostname restrictions via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-1925-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
proftpd-dfsg (PTS)buster1.3.6-4+deb10u6fixed
buster (security)1.3.6-4+deb10u4fixed
bullseye1.3.7a+dfsg-12+deb11u2fixed
bookworm1.3.8+dfsg-4+deb12u3fixed
trixie1.3.8.b+dfsg-1fixed
sid1.3.8.b+dfsg-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
proftpd-dfsgsourceetch1.3.0-19etch3DSA-1925-1
proftpd-dfsgsourcelenny1.3.1-17lenny4DSA-1925-1
proftpd-dfsgsource(unstable)1.3.2a-2low

Notes

http://bugs.proftpd.org/show_bug.cgi?id=3275

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